Combustion apparatus



Jan. 20, 1931. h J. A." FILBERT 1,789,734

COMBUSTION. APPARATUS Filed June 13, 1927 4'Sheets-Sheet l VENTOR ATTORN EY Jan. 20, 1931. J. A. FILBERT COMBUSTION APPARATUS Filed June 13,1927 4 Sheets-Sheet 2.

mvsrqon ATTORNEY Jan. 20, 1931 J. A. FILBERT I 1,739,734

COMBUSTION APPARATUS Filed June 15, 1927 4 Sheets-Sheet 3 ,Wm w M, M, 0f A m .1 r z W JI/ 7/ "Mr 1 za l gz. i a

Jan. 20, 1931. J. A. FILBERT COMBUSTION APPARATUS 4 sums-sum 4 FiledJune 13. 1927 ATTORN EY Patented Jan. 20, 1931 Jenn A. FILBER'D, orCHICAGO, ILLINOIS comnus'rron APrAnArus 1 Application filed Julie 13,

This invention relates to certain novel improvements in combustionapparatus and is specifically directed to improvements in grateconstruction for burning coal and similar fuels in furnaces and boilers.

It is among the objects of my invention to providea grateconstruction inwhich the air passage to. the fuel may be regulated iniaccordance withthe degree of heat intensity desired and also in accordance with thegrade and kind of fuel used.

Another object of the invention is to provide a grate constructionembodying an arrangement for breaking up clinker formations and thusproducing a more complete combustion of the fuel with attendant reduc-'-tion of ash and incombustible clinkers. Still another object of theinvention is to provide a grate construction which will permitexpeditious control of the fire and therefore permit the usage of arelatively shallow nre.

A further object of theinvention is to provide a grate construction fromwhich the fire may be quickly removed when so desired.

Grates of the prior art have had relatively large openings therein andwhen a fire was being laid it was difficult to prevent small particlesof fuel from falling through these 39 openings.

In viewer this it is a. further object ofniy invention to provide aconstruction in which the magnitude of the openings in the grate may beregulated so that they may be substantially closed during the laying ofa fire, in order to obviate this just described difiiculty. V p

"A still further object of the invention is'to provide a. grateconstruction in which certain lo parts may be moved relative to eachother, and which will be mounted in such a way that a high leverage willbe provided, which will permit movement of these parts with very littleexertion.

A still further object of the invention is to provide such a grateconstruction which will be simple in construction and economical tomanufacture. p 7

Other objects will appear hereinafter.

The invention consists in the novel comor ud 1927. serial No. 198,582.

bination and arrangement ofparts to be hereinafter described andclaimed.

The invention will be best understood by reference to the accompanyingdrawings, showing the preferred form of construction and in which: I V Iv p Fig. 1 is a plan View of the bottom side of my improved grate withthebar rocking mechanism partially removed;

Fig. 2 is a sectional view tak n substan' tially in the plane of theline 2-2 of Fig.1;

Fig. 3 is' a sideelevation'al view of my improved grate construction; Qi

Fig. 4 is a sectional detail view taken substantially in the planeof theline Hon 5 Fig.1;

Fig. 5' is a fragmental'plan View of the top side of my improved grate;j

Fig, 6 is a sectional detail view taken sub-- stantially in the plane oftheline 6-6 on Fig. 1;

Fig. 7 is a detail view of the link construction viewed from theopposite direction to Fig. 2; and i Fig. 8 is a detail view of a clinkercutting device employed in the mechanism.

My improved form of grate construction is adapted to be mounted in'thefire box of any typeof solid fuel burning apparatus such as v furnaces,stationary, and locomotive boilers. As the following descriptionproceeds it will become apparent that I am describing here a section ofthe grate, and it is to be understood that one or more of these sectionswould be provided in the fire box, dependent upon the size thereof.

These grate sections comprise asubstantially rectangular frame 10 thatis adapted to be located within the fire box. This rectangu lar frame 10comprises side members 11 and 9d 12- and end members 13 and 14.-Suitably secured to the frame 10 is a section 15 which is adapted to bepositioned extraneous of the fire box and on which certain operatingmechanisms to be described more fully herein- 9 5 after are mounted.

Referring to Fig. 3 it maybe seen that the side members are providedwith a plurality of slots such as 16 which embody a straight portionwhich-terminates in a rounded pormo straight portions of the slots 16are of smaller size than the rounded portions thereof and therefore theannular bosses 18 are arranged so as to embody a flat portion 19 whichis" disposed parallel to the .extent of the. gratemembers 17 The purposeof this flat portion 19 is that, when the grate members 17 tablished.

are to be'inserted into the device, they will be turned so that theirupper face will be in a substantially vertical plane and therefore, asthey are inserted into the slots, the bosses 18 will pass through thestraight portions of the slot 16, the side 18 being cut awaysufficiently to permit this. However, after the grate members are intheir proper position and are rotated so as to be located in ahorizontal plane the bosses 18 will be wider than the straight portionsof the slot 16 and therefore the grate members 17 will be prevented frommoving from their position.

, Referring to Fig. 6, it may be seen that the grate members 17 eachhave a downwardly protruding boss 2O formed thereon in juxtaposition toone end thereof. 'A connecting bar 21 having upwardly protruding bosses22 is provided. 7 The upper ends of the bosses 22 are secured to thelower ends of the bosses 20 in any approved manner such as by the boltand nut construction 23, said construction being such that a pivotalconnectionises- The section 15 embodies a downwardly protruding section24 which is disposed on the same side of the device as the connectingbar 21 and bosses 20. Pivotally secured to the section 24 is a lever 25that has a portion which extends through a slot 26 in the member 15.Disposed for cooperation with the lever 25 is a segment 27 which leverwill be transmitted to said connectinghas a slot 28 formed thereinthrough which the pin 29 extends, said pin 29 being carried on the lever25, this construction serving to limit the movement of the lever 25. Aconnecting rod 30 connects the lever 25 to the connecting bar 21 so thatmovement of said bar and therefore to the grate members 17 A removablehandle 31 is provided which is adapted tobe fitted onto the end of thelever 25. By moving the lever 25 back and forth through the slot 26 thegrate members 17 are caused to rock about the bosses 18 mounted in theslot 16 thus providing a means for removing ash from the fire and alsoproviding an arrangement whereby the fire may be expeditiously dumped.

As is shown best in Figs. 1 and 5 the grate members 17 are formed so asto embody a longitudinal slot 32 and opening into this slot are aplurality of transversely extending slots 33 Adapted to pass through theslots 36. The members 35 and 36 support rails .37 and 38 attheir lowerends, said rails being co-extenslve with the length of the grate. 'As

can best be seen by referring to Fig. 2 the rail" 38 embodies aplurality of upwardly protruding bosses 39 in which the slots 40 areprovided, a similar construction being providedon the rail 37., Therails37 and 38 are so positioned that the bosses 39 on these rails are inalignment. Pivotally mounted in the slots 40 are the link members 41 andpivotally secured to the outer end of these link members 41 are the linkmembers 42. As is best shown in Fig 4 downwardly protruding bosses 43are provided on the under side of the clinker cutting members 34 and theends of the links 42 are pivotally attached to these bosses 43. Thelinks 41 and 42 are pivotally attached together. as stated, and thispivotal mountclinker cutting members 34 are adapted to pass through the"slots 32 and 33 provided therein. A so-called pantograph leverarrangement is provided for moving the members 34 in a manner described.Brackets 46 (Fig. 1) are provided between the rails 37 V and 38 andthese brackets provide upwardly protruding bosses 47 (Fig. 2). PivotallyA mounted in the bosses 47 are the links 48 and 49. Downwardlyprotruding bosses 50 (Fig. 2) are provided on certain of the clinkercutting members 34, the arrangement shown in Fig 2 being the preferableone and links 51 and 52 are pivotally attached to these bosses. The freeends of the links 49 and 52 are pivotally secured together as at 53 anda link 54 connects these two pivotal connections. The links51 and 48 arepivot-- ally secured together, as at 55 and the link 56 connects thesetwo pivotal connections together. A link 57 is secured to the pivotalconnection 55 between the links 51 and 48 as indicated at 58 and a link59 is attached to the pivotal connection 53 between the links 49 and 52as at 60,the other end of the links 57 and 59 being attached to therocker 61 as at 62 and 63. The rocker 61is pivotally attached as at 64toa bracket 65 that is carried by the end member 36 and the sect-ion 15.As can best be seen in Figs. 3. and 7 the links 57 and 59 are attachedto the rocker .61 at opposite ends thereof. Secured to the rocker member61 is an upwardly protruding arm 66 which'protrudes through a slot67provided in the section 15. The bracket 65 includes a segment 68 whichalso protrudes through the slot 67 and a plurality of ratchet teeth 69are provided on the segment 68 and are adapted to be engaged by V thespring urged pawl 70 that is carried on the arm 66. The upper endofthearm 66 is arranged so that the handle 31 may be fittedthereon as saidhandle is adapted to operate both mechanisms.

With the grate members 17 disposed the manner shown in Fig. 2 and withthe clinker cutting members 34 disposed shown in this figure the'handle31 may be fitted on to the arm 66 and then by withdrawing the pawl'TOfromengagement with the ratchet teeth 69,.the arm 61 may bemovedforwardly. As can be seen by this figure, the link 57 is attached to theupper end of the rocker 61 and to .the links 51 and 48 at 58 which isthe connection most remote fromthe rocker 61.

attached to the lower side of the rocker member 61 and is connected tothe links 49 and 52 at 60 which is the connect on nearestthe rocker 61.Therefore when the rocker 61 is moved forwardly it will tend tospreadthe links 51 and 52 and 48 and 49 away from each other and will thuscause the clinker cutting members 34 to move down 32 and 33 andcontinued movement ofthe rocker arm 31 will dispose the members 34 inthe positionshown inFig. 3;. Sinceall of the members 34 are supportedindirectly from the shafts 45 by the links42, it is apparent thatmovement of any of the clinker cutting members 34 will be transmitted toFurther it is apparent by referring to Fig. 3 that it will be necessaryfor the members 34 to be disposed in the position shown in this figurein order that the grate members 17 may be rocked in the man nerdescribed. By referring to Figs. 1 and 2 it may be seen that thelinks'51 and 52 are formed in a certain manner in order that they willpass through the slots 33 when the members 34 are moved from theposition shown in Fig. 3 to the position shown in 2 by actuation of therocker 61. p

Referring to Fig. 8, it may be seen that the upper side of the bars ofthe member are rounded with a small radii. After a fire has been laid inthe grate and after fire has been burning for an appreciable time thefuel tends to cake or form a solid mass which is not conducive toeflicient combustion. Therefore, in order to break this mass the members34 are caused to move in the manner described, through the grate members 17 and the rounded edges on these memthe others.

in the position referring to ofccurse be The link 591s through theslotsv said berstend to break up, the mass. or clinher formation andtherefore cause more complete combustion. f

It is apparent the members'34 and the grate members 1'?- can be varied.If the members 34 are posi tioned in the slots 32 in such a way thatthey are disposed substantially horizontal with the grate members 17,that is so just the rounded po'rti ns thereof protrude through theslots, a substantially fiatsurface having very small openings will beprovided. This arrangement can be expeditiously employed during thestarting of the fire to prevent small particles of fuel falling. throughthe openings in the grate. If, however, after a fire has been burningfor an appreciable length of time and the heat intensity thereof is notas great as desired, the members 34 can beeffeetively used to breakupthe clinker formation in the manner describedand they can then bedisposed out of engagement with the members 17, thus providingrelatively iarge openings throughwhich a compara tively large quantityof air passes which will bust ou and thus produce a hotterfire. By varyithe relative position of. the members: 34 with respect to the members17, the amount of air orso-called draft through the device can beveryexpeditiously controlled.

As has been stated heretofore the grate member h in described is adaptedto ac positioned in a relatively large fire box insections, and whenthis is done each ofjtl" sections will be individually controlled, w.-will of course permit uniform distribution of heat in a boiler furnace.tions is not described herein for this forms no part of my invention andthe arrangement of these devices will be readily apparent to anyoneskilled in theart.

While I have llluStlittctl preferred form of construction for earl-yinmy invention into effect; this is capable of variation and modification,without depart- 111g from the sp rit of the invention. I.

1. A device of the character stated including a grate frame, gratesections mounted in said frame having openingstherein, breaker membersof a shape ant size substantially similar to the outline of saidopenings to permit passage of said members through'said openings, linkshaving correspondingends.

conducive to a more rapid c0m'-' more uniforn'i dis}. tribut on of thefire bed and thereforeinere The manner of mounting these secs anddescribed the r scope of the i an as season b en.

thereof pivotally connected to said breaker V 7 members, means forinterconnecting the op posite ends of said links, other links each havincorres ondin ends lvotall connec a: a: y

ed at each of the connections of said first named links to saidinterconnecting means,

means for pivotally supporting the opposite ends of said lastmentionedlinks whereby said breaker members Will be supported for simultaneousmovement through said openings in said grate sections, and means forimparting movement to said breaker. members. V

2. In a device of the character stated, a grate frame, grate sectionsmounted in said grate frame having openings therein, breaker members ofa size and shape substantially similar to the outline of saidopeningswhereby said members Will be passable through said openings, linkspivotally connected to the underside of said breaker members and movablein a plane parallel to the extent thereof, other links having one of theends thereof pivotally-connected to supporting means carried by saidgrate frame, means for interconnecting the other ends of said lastmentioned links, means for imparting movement to said breaker members tomove said breaker members through said openings, and means for lockingsaid last named means to hold said breaker members in predeterminedpositions.

3. In a device of the character stated, a grate frame, grate sectionsmounted in said grate frame having openings therein,breaker members of asize and shape substantially similar to the outline of said openingsWhereby said members will be passable through said openings, linkspivotally connected to the under side of said breaker members andmovable in a plane parallel to the extent thereof, other links havingone of the endsthereof pivotally connected to supporting means carriedby said grate frame, means for interconnecting the other ends of saidlast mentioned links, arms pivotally connected to certain ofsaid gratesections and movable in a plane substantially at right angles to theextent of said sections, other arms pivotally connected to saidsupporting means, means for interconnecting the other ends of said lastmentioned arms, and means for imparting movement to said lastmentionedarms to move said breaker members toward and through theopenings in said grate sections.

4. In a device of the character stated, a grate frame, grate sectionsmounted in said grate frame having openings therein, breaker members ofa size and shape substantially similar to the outline of said openingswhere by said members Will be passable through said openings, linkspivotally connected to the under side of said breaker members andmovable in a plane parallel to the extent thereof, other links havingone of the ends thereof pivotally connected to supporting means car riedby'said grate frame, means for interconnecting the other ends of saidlast mentioned links, arms pivotally connected to certain of said gratesections and movable in a plane substantially at right angles to theextent of said sections, other armspivotally connected .to saidsupporting means, means for inter-' connecting the other ends of saidlast men tioned arms, links for interconnecting theinterconnectionsbetween said last mentioned arms including armsextending beyond said frame,= and 'means connected to said last namedlinks for imparting movement thereto whereby I movement may betransmitted through said arms to certain of said breaker members whereby,movement will be trans mitted throughsaid links to the other of saidbreaker members to cause said breaker members to be simultaneously movedrelative to and through said openings.

5. Ina device of the character stated, a grate frame, grate sectionsmounted in said grate frame having, openings therein, breaker members ofa size and shape substantially similar to the outline of said openingsWhereby'said members will be passable through said openings, linkspivotally connected to the under side of said breaker membersand movablein a plane parallel to the-extent thereof, other links having one of theends thereof pivotally connected to supporting means carried by saidgrate frame, means for interconnecting the free ends of said lastmentioned links, arms pivotally connected to certain of said gratesections and movable in a plane substantially at right angles to theextent to said sections, other arms pivotally connected to saidsupporting means, means for interconnecting the other ends of said lastbers to be simultaneously moved relative to and through said openings,saidlast named means including a rocker member, an arm extending fromsaid rocker member, and means associated With said last mentioned armfor locking said arm in predetermined positions to lock said breakermembers in predetermined positions relative to said grate sections.

In testimony whereof I affix my signature.

- 'JOHN A. FILBERT.

